Experts believe that more than 70% of all learning is gained through the use of vision. According to the American Optometric Association (AOA), one out of four children in the U.S. have visual problems that could impair learning, and many go undetected. In 2010, an AOA teacher survey demonstrated a relationship between classroom behavior and vision. More than 60% of surveyed teachers reported improvement in either behavior or academic performance after visual problems were diagnosed and treated. The AOA recommends a first assessment at six months for children, the first comprehensive exam at age 3, another before entering school and every two years thereafter, unless otherwise indicated by their optometrist or ophthalmologist. Read more including early indicators at: www.aoa.org/x16123.xml.